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Restoring Seven Iconic Reefs A Mission to Recover the Coral Reefs of the Florida Keys Cover images: Coral Restoration Foundation (top), The Florida Aquarium (bottom, left), Reef Resilience Network (bottom, right). TABLE OF CONTENTS Restoring Seven Iconic Reefs ................................................................................................................... 2 Introduction ............................................................................................................................................ 2 The Iconic Florida Keys ......................................................................................................................... 3 The Decline of the Iconic Florida Reefs ................................................................................................ 5 The Restoration Mission........................................................................................................................ 6 The Methods ....................................................................................................................................... 10 The Plan .............................................................................................................................................. 13 Conclusion & How You Can Help ....................................................................................................... 17 Appendix I. Methods ................................................................................................................................. 18 Overall Effort ....................................................................................................................................... 18 Site Selection ...................................................................................................................................... 18 Mapping and Field Verification ............................................................................................................ 21 Zonation............................................................................................................................................... 23 Zone Targets by Phase ....................................................................................................................... 24 Requirements Calculations ................................................................................................................. 26 Conclusion ........................................................................................................................................... 31 Appendix II. Reef by Reef Habitat Mapping and Summary ................................................................... 32 Carysfort North .................................................................................................................................... 32 Carysfort South ................................................................................................................................... 33 Cheeca Rocks ..................................................................................................................................... 34 Eastern Dry Rocks .............................................................................................................................. 35 Horseshoe Reef .................................................................................................................................. 36 Looe Key ............................................................................................................................................. 37 Newfound Harbor ................................................................................................................................ 38 Sombrero Reef .................................................................................................................................... 39 Appendix III. Cost Estimate Narrative ..................................................................................................... 40 Site Preparation ................................................................................................................................... 40 Coral Restoration ................................................................................................................................ 41 Grazers ................................................................................................................................................ 41 Site Maintenance ................................................................................................................................. 42 Monitoring ............................................................................................................................................ 42 Adaptive Management and Disaster Recovery ................................................................................... 42 Cost Estimate Details .......................................................................................................................... 42 Phase 1A / 1B ..................................................................................................................................... 43 RESTORING SEVEN ICONIC REEFS A Scientific and Collaborative Plan Introduction For thousands of years, the calcium carbonate skeletons of millions of stony coral polyps have layered atop one another, building a natural structure that rises from the depths of the Atlantic Ocean floor and extends from Biscayne Bay south to the Dry Tortugas, fringing the Florida Keys coastline. These three-dimensional limestone cities of the sea are habitats teeming with underwater life, forming over one hundred miles of a bank barrier reef that supports the foundation of Photo: Mac Stone. the Florida Keys marine ecosystem and economy. Unfortunately, just beneath the surface of the famous turquoise waters, decades of cumulative stressors have led to catastrophic decline of the region’s coral reefs, the ecosystem that shapes the identity, culture, and economy of the Florida Keys. Saving Florida Keys coral reefs will require a multi-pronged approach that considers impacts at local and global scales, requiring direct Photo: Andy Newman. and informed local interventions to be implemented immediately to keep Florida Keys reef ecosystems from collapsing beyond a point at which the reef ecosystem can be restored (National Academy of Sciences, 2019). In response to reef decline, the Florida Keys has become the world leader in coral restoration. While local efforts have had success at small spatial scales, the rate of restoration has not been able to keep up with the overall rate of reef health decline in the Florida Keys. In order to restore Florida Keys reefs to benefit generations to come, restoration efforts must be scaled up with focus at the ecosystem level and with long term resiliency in mind. Current work is showing that large-scale restoration of coral reefs is possible and by harnessing research for novel ecological and genetic intervention strategies, restored reefs can be more resilient (Baums et al., 2019, National Academy of Sciences, 2019). Active and targeted coral restoration and repopulation Restoring Seven Iconic Reefs: A Mission to Recover the Coral Reefs of the Florida Keys | Page 2 has the potential to reverse decline and rebuild coral populations allowing restored reefs to seed surrounding reef habitat (P.H.M. Maya et al., 2016). Restoring Seven Iconic Reefs: A Mission to Recover the Coral Reefs of the Florida Keys is a comprehensive approach that uses the best available restoration science to improve reef ecological function by restoring diverse, reef-building corals to seven iconic reef sites in the Florida Keys National Marine Sanctuary. Informed by years of research, successful trials, and expertise from two dozen coral scientists and restoration practitioners, this scientific and collaborative plan will put Florida’s reefs on track for recovery and demonstrate how restoration can support a vibrant, sustainable, local economy. The Iconic Florida Keys The Florida Keys Reef Tract is the only bank barrier coral reef in the continental United States, attracting nearly 5 million visitors each year who contribute $2.4 billion in sales annually in the Keys (TBD Economics, LLC, 2019). About half of those visitors arrive to Key West by plane or by ship, while the other half drive from the mainland on the two-lane Overseas Highway, the only Florida Keys National Marine Sanctuary road connecting the island Designated in 1990, Florida Keys National Marine Sanctuary protects 2,900 chain (Tourist Development square nautical miles of marine habitat stretching from southern Miami to the Dry Tortugas. Since its inception almost 30 years ago, the sanctuary Council, 2018). has implemented numerous regulations and strategies in the interest of the ecological health of the Keys: Diving, snorkeling, and sport ● Installation of over 490 mooring buoys in order to reduce damage to fishing remain top reefs and seagrass beds from boat anchoring. recreational attractions in the ● The establishment of 18 Sanctuary Preservation Areas (SPAs) Florida Keys and one out of covering 4.87 sq nautical miles. every two jobs is connected ● The establishment of two Ecological Reserve Zones at Western Sambo Key and areas adjacent to Dry Tortugas National Park covering to the marine ecosystem nearly 160 sq nautical miles. (TBD Economics, LLC, ● The management of 24 “no take” zones making up 6%
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